Note: Descriptions are shown in the official language in which they were submitted.
- 1
Increasing Muscular Volume in a Human using Hyaluronic Acid
FIELD OF INVENTION
[0001] This invention relates to increasing muscular volume of a muscle in a
human.
BACKGROUND OF THE INVENTION
[0002] Body image and health is of interest for many humans. For some, there
is a
need to have shapely arms, legs, pectoral and gluteal muscles and the like,
often
together with improved strength and overall fitness. Given the more hectic
lifestyles
of people in last few years, there has been an increased interest in finding
simple, non-
invasive and safe methods for improving the appearance and strength of a
person's
arms, legs, pectoral, gluteal and other muscles, without having to expend too
much
time and effort.
[0003] Hyaluronic acid (HA), also known as hyaluronan or hyaluronate, is a
well-
known, naturally occurring polysaccharide that is secreted by fibroblasts and
found in
all mammals. It is a long unbranched, high molecular weight polysaccharide
composed of repeating dimeric units of D-glucuronic acid and N-
acetylglucosamine,
and is found in all tissues in the body, with higher amounts in the skin, the
vitreous
humor of the eye and connective tissues. When not bound to other molecules, HA
binds to water and forms a highly viscous solution, giving it a jelly-like
substance.
[0004] HA currently has a variety of uses, including cosmetic and therapeutic
uses.
With respect to therapeutic uses, HA has been used as a replacement for the
liquid
vitreous of the human eye to aid in ophthalmic surgery; to treat
osteoarthritis, by
intra-articular injection directly into the synovial fluid in the knee (for
example,
George (1998) Ann. Rheum. Dis. 57: 637-40; Weiss et al. (1981) Arthritis
Rheum. 11
(suppl 1): 143-4); to manage and treat chronic tennis elbow or lateral
epicondylosis
(for example, Petrella et al. (2010) Sports Medicine, Arthroscopy,
Rehabilitation,
Therapy & Technology 2:4; Orchard and Kountouris (2011) BMJ (2011) 342:
d2687);
and to treat vocal fold paralysis by injection into the thyroarytenoid (TA)
muscle of
the larynx (for example, Wang et al. (2011) Journal of Voice 26(4): 506-514;
Lee et
al. (2010) Thyroid 20(5): 513-517). Cosmetically, HA has been used to provide
facial
enhancements and improve the skin's contour and reduce depressions in the skin
due
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to acne, scars, injury or lines by subcutaneous injection, directly under a
person's skin
(for example, Duranti et al. (1998) Dermatol. Surg. 24: 1317-25; Jordan (2003)
Can.
J. Ophthalmol. 38: 285-8; Cheng et al. (2002) Otolaryngol. Clin. North Am.
35:73-
85). In addition to being used as the primary agent, HA has been used as a
secondary
agent, such as a viscosity-inducing component (for example, Aydin et al.
(2007) Auris
Nasus Lwynx 34(3): 333-8; US 2008/0044476), or as a biocompatible polymer (for
example, KR 2008/0100126).
[0005] Recently, MacrolaneTM (Q-med AB), a gel derived from HA, has been used
for body contouring and breast augmentation in Europe. It has been used for
reshaping and boosting volume in specific areas of the body, such as the
buttocks,
calves, chest muscles and arms, and filling concavities and scars on the body
(see
URL: stureplanskliniken.com/macrolane.asp; and
familyhealthguide.co.uk/cosmetic-
surgery/macrolane.html). MacrolaneTM is intended solely for injection into the
subcutaneous skin layer above the muscle, but not for intramuscular or
intravascular
injection (Q-Med AB Macrolane Clinical Guide; or see URL:
myfacemybody.com/procedures/non-surgical/injectable-body-contouring-
macrolane/).
SUMMARY OF THE INVENTION
[0006] This invention relates to increasing muscular volume of a muscle in a
human.
The present disclosure further describes injection of hyaluronic acid into
muscle of a
human for increasing the muscular volume of the muscle.
[0007] The present disclosure provides a method for increasing muscular volume
of a
muscle in a human by injecting a composition comprising hyaluronic acid (HA)
into a
muscle of interest at one or more than one location in the muscle, for
example, two or
more, three or more, or four or more locations in the muscle, thereby
increasing the
muscular volume as compared to the muscular volume before the composition is
injected into the muscle. The injection into the muscle may be done for
cosmetic
purposes or to improve muscle function or performance. The muscle injected may
be
selected from the group of an arm muscle, a leg muscle, a chest muscle, a back
muscle and a buttock muscle.
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[0008] The composition comprising HA may be any composition comprising HA.
The HA of the composition may be of a molecular weight in the range of
approximately 5,000 Daltons to approximately 10 million Daltons, or any amount
therebetween, for example about 5,000 Daltons to about 6 million Daltons,
about
5,000 Daltons to about 2 million Daltons, about 5,000 Daltons to about 1
million
Daltons, or for example from about 5,000 Daltons to about 500,000 Daltons.
[0009] The concentration of cross-linked HA in the composition may range from
approximately 0.5 mg/mL to approximately 40 mg/mL, or any amount therebetween,
for example, from approximately 0.5 mg/mL to approximately 35 mg/mL or any
amount therebetween, from approximately 0.5 mg/mL to approximately 30 mg/mL or
any amount therebetween, from approximately 0.5 mg/mL to approximately 25
mg/mL or any amount therebetween, or from approximately 0.5 mg/mL to
approximately 20 mg/mL or any amount therebetween (see, for example, US
20100316683, which is incorporated by reference herein).
[0010] The viscosity and the elasticity (or stiffness) of the composition may
be any
viscosity and elasticity that is suitable for injection. For example, the
elastic modulus
(G') of the HA composition may range from about 15 Pa to about 900 Pa, which
range is not to be considered limiting (see, for example, Kablik J. et al.,
Derrnatol
Surg 2009; 35: 302-312, which is incorporated by reference herein).
[0011] The composition comprising HA may be any commercially available HA
product. For example, the HA composition may be selected from any one of the
following commercially available HA products: Juvederme Ultra, Juvederm0
UltraPlus, Juvederm0 Plus, Captiquee, Hylaform , RESTYLANEO,
RESTYLANEO Perlane0, RESTYLANEO SubQ, RESTYLANEO Touch,
Prevellee, Prevelle Silk , MacrolaneTM, HyalganO, SynviscO (also known as
Hylan
G-F 20), SupartzO (also known as Artz0 or Artzal), Modais Shape or OrthoviscO.
[0012] Any number of muscles of a human may be directly injected with the
composition, such as, for example, the biceps muscle; the triceps muscle; the
brachioradialus muscle; the brachialis muscle (brachialis anticus); the
superficial
compartment wrist flexors; the deltoid muscle; the biceps femoris, the
gracilis, the
semitendinosus and the semimembranosus muscles of the hamstrings; the rectus
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femoris, vastus lateralis, vastus medialis and vastus intermedius muscles of
the
quadriceps; the gastrocnemius (lateral and medial), tibialis anterior, and the
soleus
muscles of the calves; the pectoralis major and the pectoralis minor muscles
of the
chest; the latissimus dorsi muscle of the upper back; the rhomboids (major and
minor); the trapezius muscles that span the neck, shoulders and back; the
rectus
abdominis muscles of the abdomen; and the gluteus maximus, gluteus medius and
gluteus minimus muscles of the buttocks.
[0013] Also provided is the injection of the composition intramuscularly into
the
muscle. The present disclosure provides for a volume of injected HA
composition
ranging from approximately 0.01% to approximately 25% of the total muscle
volume
of the muscle to be injected, or any amount therebetween. Depending upon the
volume of the muscle to be treated, the HA composition may be injected at one
to 100
locations within the muscle at a plurality of injection sites. The injections
may be
either uniformly distributed along the muscle to be treated or concentrated at
one or
more injection sites along the muscle to be treated, for example, two or more,
three or
more, or four or more injection sites, depending on the cosmetic effect and/or
the
muscle performance desired.
[0014] The composition may also be injected using a volumetric approach to
provide
the injection of the composition at a plurality of locations along a depth of
a single
injection site. This volumetric approach may involve injecting the composition
while
simultaneously withdrawing the needle or cannula from the distal-most aspect
of a
single injection site to the proximal-most aspect of the injection site,
thereby
distributing the composition in multiple layers of the muscle at the single
injection
site. This process of injecting the composition at one or more than one
location of a
single injection site may comprise the following: (a) piercing the proximal
muscular
sheath at the injection site with the instrument for injection; (b)
positioning the
instrument at the distal-most aspect of the muscular sheath at the injection
site (i.e., a
first location); (c) at the first location, pulling back on the instrument to
create
negative pressure and prevent intravascular injection and then injecting the
composition; (d) slightly withdrawing the instrument toward the proximal
aspect of
the muscular sheath to a second location; (e) at the second location, pulling
back on
the instrument to create negative pressure and then injecting the composition
at the
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second location; and (I) repeating steps (d) and (e) at any number of
additional
locations, depending on the desired effect, with each additional location
being
positioned closer to the proximal-most aspect of the muscular sheath as
compared to
the immediately preceding location.
[0015] The present disclosure also provides for the real-time guidance of the
injection
of the composition into the muscle to be injected. In this regard, the
composition is
injected with the assistance of an ultrasound machine in real-time, or any
other
method for imaging muscle that is known in the art, to visualize the muscle of
interest
while injecting the composition.
[0016] Further described herein is the intramuscular injection of
approximately
0.01cc/kg of body weight of an HA composition to approximately 6.0cc/kg of
body
weight of an HA composition into a single muscle to be injected, or any amount
therebetween. For example, approximately 0.01cc/kg of body weight to
approximately 2.0cc/kg of body weight in total may be injected per biceps or
triceps
muscle, or any amount therebetween; approximately 0.01cc/kg of body weight to
approximately 1.5cc/kg of body weight in total may be injected per brachialis
muscle
of the arm, or any amount therebetween; approximately 0.01cc/kg of body weight
to
approximately 0.8cc/kg of body weight in total may be injected per
brachioradialis
muscle of the arm, or any amount therebetween; approximately 0.01cc/kg of body
weight to approximately 0.8cc/kg of body weight in total may be injected per
superficial compartment wrist flexor muscle, or any amount therebetween;
approximately 0.01cc/kg of body weight to approximately 1.3cc/kg of body
weight in
total may be injected per lateral gastrocnemius muscle of the calf, or any
amount
therebetween; approximately 0.01cc/kg of body weight to approximately 1.3cc/kg
of
body weight in total may be injected per medial gastrocnemius muscle of the
calf, or
any amount therebetween; approximately 0.01cc/kg of body weight to
approximately
3.2cc/kg of body weight in total may be injected per soleus muscle of the
calf, or any
amount therebetween; approximately 0.01cc/kg of body weight to approximately
5.0cc/kg of body weight in total may be injected per total quadricep muscle,
or any
amount therebetween; approximately 0.01cc/kg of body weight to approximately
5.6cc/kg of body weight in total may be injected per total hamstring muscle,
or any
amount therebetween; approximately 0.01cc/kg of body weight to approximately
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muscle of the
buttocks, or any amount therebetween; approximately 0.01cc/kg of body weight
to
approximately 2.3cc/kg of body weight in total may be injected per gluteus
medius
muscle of the buttocks, or any amount therebetween; approximately 0.01cc/kg of
body weight to approximately 2.3cc/kg of body weight in total may be injected
per
deltoid muscle, or any amount therebetween; approximately 0.01cc/kg of body
weight
to approximately 2.3cc/kg of body weight in total may be injected per
trapezius
muscle, or any amount therebetween; approximately 0.01cc/kg of body weight to
approximately 3.8cc/kg of body weight in total may be injected per pectoralis
major
muscle of the chest, or any amount therebetween; approximately 0.01cc/kg of
body
weight to approximately 4.4cc/kg of body weight in total may be injected per
latissmus dorsi muscle of the back, or any amount therebetween; or
approximately
0.01cc/kg of body weight to approximately 0.5cc/kg of body weight in total may
be
injected per rectus abdominis muscle of the abdomen, or any amount
therebetween.
[0017] The injections may also be repeated on a periodic basis from a repeat
treatment per month, every two months, every 3 months, every 4 months, every 6
months, every 12 months, every 15 months, every 18 months, every 21 months,
every
24 months, every 26 months, every 28 months or every 30 months, as desired.
Repeat
treatments may be performed to either maintain the muscular volume or
progressively
augment the muscular volume over time.
[0018] For those repeat injections done to maintain muscular volume (i.e., no
further
augmentation of the muscle), the additional injections of the HA composition
may be
repeated every 1, 2, 3, 6, 12, 18, 24 or 30 months, or any time therebetween.
These
maintenance injections may comprise low volume doses, for example, without
limitation, doses of approximately 0.1cc/kg to approximately 1.0cc/kg of body
weight
of the HA composition, or any amount therebetween, are injected into the
muscle of
interest. The dose injected and the frequency of the repeat injections may
depend on
the physical activity of the individual patient.
[0019] For those repeat injections done to progressively augment the muscle
over
time (i.e., to achieve a greater muscular volume over time), the additional
injections
of the HA composition may be done in a step-wise manner. An initial volume
ranging
from approximately 0.1cc/kg to approximately 6.0cc/kg of body weight may be
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injected into the muscle of interest, followed by additional injections of
approximately
0.1cc/kg to approximately 6.0cc/kg of body weight of the HA composition
injected
into the same muscle at approximately 1 month to approximately 8 months or
later
after the initial injection, or any time therebetween, to achieve additive
effects on the
initial injection.
[0020] The present disclosure also provides for a method of altering a contour
of a
muscle of a human that comprises the steps of obtaining an image of the
contour of
the muscle, determining a new contour of the muscle, injecting a composition
comprising HA into one or more than one location of the muscle, for example,
two or
more, three or more, or four or more locations, to obtain the new contour of
the
muscle, which injection results in an alteration of the contour of the muscle.
[0021] The present disclosure also provides for a use of the composition
comprising
HA, as defined above, for increasing muscular volume of a muscle in a human
compared to the muscular volume of the muscle in the absence of said
composition,
wherein the composition is for injection into the muscle.
[0022] The present disclosure further provides for a kit comprising the
composition
comprising HA, as defined above, and instructions for intramuscular injection
of the
composition into a muscle in a human.
[0023] This summary of the invention does not necessarily describe all
features of the
invention. Other aspects, features and advantages of the present disclosure
will
become apparent to those of ordinary skill in the art upon review of the
following
description of specific embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] These and other features of the invention will become apparent from the
following description in which reference is made to the appended drawings,
wherein:
[0025] FIGURE 1 presents a digital image of a posterior view of patient A's
buttocks
of Example 1 to illustrate the gluteus maximus muscle: (A) prior to injection
of the
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composition comprising HA; and (B) at 8 weeks post-injection of the
composition
comprising HA.
[0026] FIGURE 2 presents a digital image of a right side view of patient A's
buttocks of Example 1 to illustrate the gluteus maximus muscle: (A) prior to
injection
of the composition comprising HA; and (B) at 8 weeks post-injection of the
composition comprising HA.
[0027] FIGURE 3 presents a digital image of a posterior view of patient B's
buttocks
of Example 2 to illustrate the gluteus maximus muscle: (A) prior to injection
of the
composition comprising HA; and (B) at 6 months post-injection of the
composition
comprising HA.
[0028] FIGURE 4 presents a digital image of a posterior view of the calves of
the
male patient of Example 3 to illustrate the gastrocnemius muscle: (A) prior to
injection of the composition comprising HA; and (B) at one year post-injection
of the
composition comprising HA.
[0029] FIGURE 5 presents a digital image of the male patient's arm of Example
4 in
a flexed position to illustrate the biceps and triceps muscles: (A) prior to
injection of
the composition comprising HA; and (B) at 2 weeks post-injection of the
composition
comprising HA into the biceps muscle and at 14 weeks post-injection of the
composition comprising HA into the triceps muscle.
[0030] FIGURE 6 presents a digital image of the male patient's arm of Example
4 in
a flexed position to illustrate the brachioradialis muscle and superficial
wrist flexors:
(A) prior to injection of the composition comprising HA; and (B) at 8 weeks
post-
injection of the composition comprising HA.
[0031] FIGURE 7 presents a digital image of a side view of the chest of the
male
patient of Example 7 to illustrate the pectoralis major muscle: (A) prior to
injection of
the composition comprising HA; and (B) at 6 months post-injection of the
composition comprising HA.
[0032] FIGURE 8 presents a digital magnetic resonance image of a T2 fat
saturated
axial image of: (A) the biceps- and triceps-injected muscles 18 months post-
injection
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and 21 months post-injection, respectively; and (B) the deltoid-injected
muscle 12
months post-injection.
[0033] FIGURE 9 presents a digital magnetic resonance image of a T1 fat
saturated
post-contrast axial image of the deltoid-injected muscle 12 months post-
injection.
[0034] FIGURE 10 presents a digital image of a posterior view of the male
patient's
buttocks of Example 10 to illustrate the gluteus maximus muscle: (A) prior to
injection of the composition comprising HA; and (B) at one week post-injection
of the
composition comprising HA.
DETAILED DESCRIPTION
[0035] The present disclosure relates to increasing muscular volume in a
muscle of a
human. This invention also relates to the injection of hyaluronic acid into a
muscle of
a human for increasing the muscular volume of the muscle.
[0036] The present disclosure provides a method for increasing the muscular
volume
of a muscle in a human by injecting a composition comprising hyaluronic acid
(HA)
into the muscle. The composition is injected into the muscle of interest at
one or more
than one location in the muscle, for example, two or more, three or more, or
four or
more locations, which results in an increase in the muscular volume as
compared to
before the composition is injected into the muscle.
[0037] The composition for intramuscular injection into a muscle of a human
comprises hyaluronic acid as the primary agent. The terms "hyaluronic acid"
and
"HA" are used interchangeably herein and have the same meaning.
[0038] As used herein, "hyaluronic acid" or "HA" means the compound
constituted
of the series of repeating dimeric units of D-glucuronic acid and N-
acetylglucosamine. The term "hyaluronic acid" is also intended to include not
only
elemental hyaluronic acid, but hyaluronic acid with traces of other elements
or in
various compositions with other elements, as long as the chemical and physical
properties of hyaluronic acid remain unchanged. In addition, the term
"hyaluronic
CA 3059521 2019-10-21
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acid" as used in the present disclosure includes natural formulas, synthetic
formulas
or a combination of these natural and synthetic formulas.
[0039] The HA used in the present disclosure may be extracted from animal
tissue
such as rooster combs or umbilical cords or from bacterial cultures such as
those of
hemolytic group A or C Streptococci. Those skilled in the art will appreciate
that the
HA of the present disclosure may be obtained from any other source so long as
it is
pure enough to avoid provoking an adverse or toxic reaction in the human in
which it
is introduced.
[0040] The HA used in the present disclosure may be non-stabilized and non-
chemically modified in the form, in particular, of esters or amides, or the HA
may be
chemically modified and/or cross-linked derivatives (i.e., exhibiting intra-
and/or
interchain bridges). Cross-linking refers to a process in which the individual
polymer
chains of HA are chemically bound (or "cross-linked) together, transforming a
liquid
HA into a soft solid or gel. Cross-linking substantially reduces the
miscibility of the
HA with water, but does not change the physicochemical characteristics and the
biological properties of the HA. Any technique known in the art may be used
for
cross-linking the HA, including the use of cross-linking agents known in the
art, such
as divinyl sulphone (DVS), 2,7,8-diepoxyoctane (DEO), and 1,4-butanediol
diglycidyl (BDDE). Cross-linked HA compositions are known in the art, for
example,
Juvederm Ultra Plus, Juvederm Ultra, Prevelle , Captique , Hylaform and
RESTYLANEO (see, for example, Allemann, I.B. and Baumann, L. "Hyaluronic acid
gel (JuvédermTM) preparations in the treatment of facial wrinkles and folds."
Clinical
Interventions in Aging 3(4): 629-634, 2008, herein incorporated by reference).
[0041] As used herein, "cross-linked HA" means HA that has been modified using
cross-linking agents, as described above, such that the individual HA polymer
chains
are cross-linked to other HA polymer chains.
[0042] The compositions of the present disclosure may comprise from about 0.5
mg/mL cross-linked HA to about 40 mg/mL cross-linked HA (gel concentration),
with the remainder of the composition comprising any aqueous, biocompatible
solution known in the art, such as water, phosphate containing buffers, and
sodium
chloride containing buffers. The composition may further comprise non-cross-
linked
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HA. The concentration of cross-linked HA in the compositions of the present
disclosure may be adjusted by one skilled in the art according to the
molecular weight
of the HA, the effect desired, for example, cosmetic or muscle enhancement,
and the
particular muscle to be injected. By way of example, the concentration of
cross-linked
HA in the composition can vary from approximately 0.5 mg/mL to approximately
40
mg/mL, or any amount therebetween, from approximately 0.5 mg/mL to
approximately 35 mg/mL, from approximately 0.5 mg/mL to approximately 30
mg/mL, from approximately 0.5 mg/mL to approximately 25 mg/mL, from
approximately 0.5 mg/mL to approximately 20 mg/mL, or from approximately 0.5,
1,
1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 12.0, 15.0,
18.0, 20.0, 22.0,
24.0, 25.0, 26.0, 28.0, 30, 35, 40 mg/mL, or any amount therebetween (see, for
example, US 20100316683, which is incorporated by reference herein).
[0043] With respect to the individual polymer chains of HA in a composition,
the
percentage of cross-linking within an individual HA polymer chain (i.e. the
degree of
cross-linking for an individual HA polymer chain) in the composition may be
between
approximately 0% and approximately 20% of the HA polymer chain, or any amount
therebetween.
[0044] Commercially available HA compositions may also be used. Examples of
commercially available HA products that may be used include, but is not
limited to,
Juvedemi (a highly cross-linked hyaluronic acid product sold by Allergan,
Inc.)
including Juvederm0 Plus, Juvederm0 Ultra Plus, Juvederm0 Ultra; Prevelle0;
Captique (non-animal stabilized HA); Hylaform (highly purified form of HA);
RESTYLANEO (non-animal stabilized HA products sold by Q-Med AB), including
RESTYLANEO Perlane0, RESTYLANE0 Touch, and RESTYLANE SubQ;
MacrolaneTM (a more viscous RESTYLANEO product sold by Q-Med AB);
Hyalgan0 (a viscous solution of the sodium salt of HA naturally derived from
rooster
combs without chemical modification); Synvisc0 or Hylan G-F 20 (a viscous
mixture
of chemically cross-linked HA, composed of approximately 80% hylan A and
approximately 20% of hylan B); Supartze (a highly purified sodium hyaluomate
extracted from rooster combs and marketed as Artz0 or Artzal outside of the
US);
Modelis Shape; and Orthovisc0 (a viscous solution derived from rooster combs).
However, one of skill in the art will appreciate that any acceptable HA
product or any
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composition comprising HA and/or its derivatives suitable for introduction
into a
human can be used in accordance with the present disclosure.
[0045] In addition to HA, derivatives of HA or a combination thereof, the
compositions of the present disclosure may further comprise any one or more of
the
following: an aqueous carrier component, a buffer component, a tonicity
component,
a biocompatible preservative component or a resuspension component. The
physicochemical characteristics of the HA of the composition of the present
disclosure may be varied depending on the particular muscle injected and the
effect
desired, for example, a cosmetic (volume-based effect), or a muscle
enhancement
(performance-based effect).
[0046] The molecular weight of the HA present in the composition may vary to a
large extent depending on the muscle to be injected and desired effect. The
molecular
weight can be in the range of about 5,000 Daltons to about 10 million Daltons,
or any
amount therebetween, for example, from approximately 5,000 Daltons to
approximately 6 million Daltons or any amount therebetween, from approximately
5,000 Daltons to approximately 2 million Daltons or any amount therebetween,
from
approximately 5,000 Daltons to approximately 1 million Daltons, or any amount
therebetween, or from appi roximately 5,000 Daltons to approximately 500,000
Daltons, or any amount therebetween.
[0047] The diameters of the gel particles of the HA composition may be in the
range
of, but not limited to, approximately 501.tm to approximately 2000 m, or any
amount
therebetween, for example, from approximately 50iim to approximately 1500pm or
any amount therebetween, from approximately 501.tm to approximately 1000iim or
any amount therebetween, from approximately 501.1m to approximately 800[im or
any
amount therebetween, or from approximately 50 m to approximately 400iim or any
amount therebetween. As a result, the gel particle size of the HA composition
may be
in the range of approximately 800 gel particles per mL to approximately
1,000,000
gel particles per mL, or any amount therebetween, depending on the desired
cosmetic
or muscle performance effect. For example, the gel particle size of the HA
composition may be from approximately 1,000 gel particles per mL to
approximately
500,000 gel particles per mL, from approximately 1,000 gel particles per mL to
approximately 250,000 gel particles per mL, from approximately 1,000 gel
particles
CA 3059521 2019-10-21
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per mL to approximately 100,000 gel particles per mL, from approximately 1,000
gel
particles per mL to approximately 50,000 gel particles per mL, from
approximately
1,000 gel particles per mL to approximately 10,000 gel particles per mL, or
any amount
therebetween. Alternatively, homogenous gel HA compositions, which do not use
sizing
.. technology, may be used for injection, such as, but not limited to,
JuvedermTm's
hylacross technology.
[0048] Viscosity and elasticity of the composition comprising HA and/or its
derivatives
will be any viscosity and elasticity that is suitable for injection. For
example, the elastic
modulus (G') of the HA composition may range from about 15 Pa to about 900 Pa,
which range is not to be considered limiting (see, for example, Kablik et al.,
Dermatol
Surg 2009; 35: 302-312).
[0049] Examples of certain commercially available HA compositions and the
properties
of those compositions are shown in the table below. These examples are
exemplary only
and should not be considered limiting in any manner:
Hylaform Hylaform Prevelle Restylane Perlane Juvederm
Plus 30HV
Total HA 5.5 5.5 5.5 20 20 24
concentration
(mg/mL)
Gel-to-fluid ratio 98:2 98:2 98:2 75:25 75:25 --
60:40
HA gel 5.4 5.4 5.4 15.0 15.0 14.4
concentration
(mg/mL)
Degree of HA 23 23 23 3 3 10
modification (%)
Percentage of cross- 12 12 12 1.2 1.4 2
linked HA
Dilution <25 <25 <25 50 50 300
durability/percentage
swelling
G' modulus (Pa) 140-220 140-220 230- 660 588 105
260
Average particle size 500 700 350 300 650 300
(11m)
Source: Kablik et al. "Comparative Physical Properties of Hyaluronic Acid
Dermal
Fillers." Dermatol Surg 2009; 35: 302-312.
[0050] The compositions according to the present disclosure are formulated for
injection
into the muscle of a human. As used herein, the term "muscle" refers to a
muscle in the
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arm, leg, chest, back, abdomen, buttocks and any other area of the human body
that a
person desires to be more shapely and/or more muscular.
[0051] A person skilled in the art would understand that prior to injection of
the
compositions into the muscles of a human, patient health is assessed to ensure
that a
relative standard of patient health is met prior to starting the treatments,
as described
herein. The expression "relative standard of patient health" means that, at a
minimum,
the patient has no significant relevant pre-existing medical conditions and is
generally
CA 3059521 2019-10-21
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considered to be in a satisfactory state of physical, mental and social well-
being by a
medical professional prior to starting the treatments described herein.
[0052] The present disclosure contemplates injection of a composition
described
herein into the muscles of an arm, if a human desires more shapely arms, more
muscular arms, or a combination thereof, when compared to the shape or
performance
of the arm prior to HA administration. The composition can be injected into
any
muscle in the arm at one or more than one location, for example two or more,
three or
more, or four or more locations. The location of the injection sites, or
volume injected
will depend on the desired shape, muscle performance or a combination thereof
desired. For example, an HA composition can be injected directly into one or
more of
the biceps muscle (biceps brachii), the brachialis muscle, the brachioradialus
muscle,
the triceps muscle (triceps brachii), the superficial compartment wrist
flexors, or other
muscle in the arm to give the desired shape to the arm. In addition, an HA
composition described herein may be injected into the deltoid muscle, if a
person
wishes to re-shape or provide muscular definition to the contour of the
shoulder.
[0053] The present disclosure also contemplates injection of an HA composition
described herein into the muscles of a leg, if a human desires more shapely
legs, more
muscular legs, or a combination thereof, when compared to the shape or
performance
of the leg prior to HA administration. The composition can be injected into
any
muscle in the leg at one or more than one location, for example two or more,
three or
more, or four or more locations, and will depend on the desired shape, muscle
performance, or a combination thereof that is desired. For example, the
composition
can be injected directly into one or more of the hamstrings, including the
biceps
femoris, the gracilis, the semitendinosus and semimembranosus muscles of the
hamstrings; the quadriceps, including the rectus femoris, vastus lateralis,
vastus
medialis and vastus interniedius muscles of the quadriceps; the calves,
including the
gastrocnemius (lateral and medial), tibialis anterior, and the soleus muscles
of the
calves; or any other muscle in the legs to give the desired shape or muscle
performance to the legs.
[0054] In a similar manner to that described above, the present disclosure
further
contemplates injection of a composition described herein into the pectoral
muscles of
a person's chest at one or more than one location, for example two or more,
three or
CA 3059521 2019-10-21
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more, or four or more locations. The composition can be injected directly into
the
pectoralis major and/or pectoralis minor muscles of the chest and/or any other
muscle
in the chest to give the desired effect. In addition, the composition may be
injected
into the muscles of the abdomen, including, without limitation, the rectus
abdominis.
[0055] The present disclosure further contemplates injection of a composition
described herein into the muscles of the buttocks, if the person desires more
shapely
buttocks, more muscular buttocks, or a combination thereof, when compared to
the
shape or performance of the leg prior to HA administration. The composition
can be
injected into any muscle in the buttocks at one or more than one location, for
example
two or more, three or more, or four or more locations, and will depend on the
desired
shape, muscle performance, or a combination. For example, the composition can
be
injected directly into the gluteus maximus, gluteus medius, gluteus minimus,
or any
other muscle in the buttocks to give the desired effect.
[0056] Additionally, a person may further wish to add muscular definition and
contour to his/her back. The present disclosure contemplates injection of the
composition comprising HA into any back muscle, as well as any other muscle of
a
person's body at one or more than one location, for example two or more, three
or
more, or four or more locations. For example, but without limitation, the
composition
can be injected directly into the latissimus dorsi of the upper back, the
rhomboids
(major and minor) and/or the trapezius muscles that span the neck, shoulders
and
back.
[0057] It is to be understood that a person may obtain injections into one or
more
muscle groups at a time, for example, two or more, three or more, or four or
more
muscle groups at a time, so that, for example, the arms, legs and buttocks may
be
treated during one visit with a medical practitioner.
[0058] As used herein, the term "muscular volume" refers to the total volume
contained within the muscular sheath (otherwise known as the epimysium) of a
muscle. This includes the non-contractile muscle cell fluid (sarcoplasm) of a
muscle,
which generally accounts for approximately 25-30% of a muscle size, and the
contractile component of the muscle, including individual myocytes. "Muscular
volume" can be measured by assessing the cross-sectional area of the muscle of
the
CA 3059521 2019-10-21
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arm, leg, back, or buttock using standard techniques as would be known in the
art,
such as ultrasound or magnetic resonance imaging (MRI), by determining the
profile
of the muscle, for example by determining the height, width, or both, of an
arm or leg,
or the side profile of a chest, back or buttock, or by using any other
clinical
measurements known in the art.
[0059] The present disclosure contemplates an increase in muscular volume by
intramuscular injection of a composition comprising HA into a muscle of
interest.
Injection into the muscle of a composition comprising HA increases the
muscular
volume of the muscle of interest; i.e., the cross-sectional area of that
muscle. The
increase in muscular volume can be determined by measuring the circumference
of
the muscle or the area of the body that the muscle is located before and after
injection
with the composition comprising HA.
[0060] The injections used in the methods of the present disclosure can be
made at
one or more than one location within the muscle of interest, for example, two
or more,
three or more, or four or more locations, and at one or more than one depth
per
injection site between the proximal aspect of the muscle sheath ("muscle
sheath" is
otherwise known as the epimysium) and the distal aspect of the muscle sheath,
such
as two or more, three or more, or four or more depths per injection site. For
example,
for muscles on top of and attached to a bone, the "proximal aspect" refers to
the side
of the muscle sheath that is closest to the surface of the skin and the
"distal aspect"
refers to the side of the muscle sheath furthest from the surface of the skin
and closest
to the bone. The intramuscular injections can be made, for example, without
limitation, at a depth of approximately Ocm to approximately 10cm or any
amount
therebetween, from the proximal aspect of the muscle sheath. For example, from
about 0, 0.1, 0.2, 0.5, 1.0, 1.25, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0,
5.5, 6.0, 6.5, 7.0,
7.5, 8.0, 8.5, 9.0, 9.5, 10 cm, or any amount therebetween, from the proximal
aspect
of the muscle sheath. However, one of skill in the art will appreciate that
the depth at
which the injection is made may vary significantly between different
individuals, the
specific injection site, and the muscle into which the composition is
introduced, the
shape of the muscle that is desired, the desired cosmetic or muscle
performance
effect, or a combination thereof.
CA 3059521 2019-10-21
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[0061] As used herein, the term "location" means the position inside the
muscle
where the composition is administered. The present disclosure contemplates
injection
at one or more than one location, for example, two or more, three or more, or
four or
more locations inside a muscle.
[0062] As used herein, the term "injection site" means the site at which the
instrument
for injecting the composition into a muscle is pierced through the muscular
sheath for
injection of the composition.
[0063] The present disclosure provides for the composition comprising HA
and/or its
derivatives being injected into one or more than one location of a muscle, for
example
two or more, three or more, or four or more locations of a muscle, which
results in an
increase in muscular volume, muscle performance, or both, in the muscle of
interest.
By way of example, the composition comprising HA may be injected at any one of
one to about 100 locations, or any amount therebetween. For example, 1, 2, 3,
4, 5, 6,
7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90,
92, 95, 98, 100
locations per muscle may be injected with the composition.
[0064] The locations of injection may be at a single injection site at one or
more than
one depth of the injection site, for example, two or more, three or more, or
four or
more depths of the injection site. The present disclosure contemplates the
injection of
the composition comprising HA and/or its derivatives thereof into one or more
than
one location, for example, two or more, three or more, or four or more
locations, at a
single injection site using a volumetric approach or any other method for
distributing
the composition into different layers of the muscle from the proximal aspect
to the
distal aspect of the muscle at a single injection site. For example, the
instrument for
injecting the composition into a muscle may be pierced through the proximal
muscular sheath at an injection site and into the muscle up to the distal-most
aspect of
the muscular sheath and the composition injected at more than one location by
injecting the composition while simultaneously withdrawing the instrument to
the
proximal-most aspect of the injection site. Multiple locations of a single
injection site
are, therefore, injected with hyaluronic acid as the needle is withdrawn
towards the
proximal-most aspect of the injection site. Negative pressure is applied prior
to each
injection to prevent intravascular injection. Thus, this process of injecting
the
composition at one or more than one location of a single injection site may
comprise
CA 3059521 2019-10-21
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the following: (a) piercing the proximal muscular sheath at the injection site
with the
instrument for injection; (b) positioning the instrument at the distal-most
aspect of the
muscular sheath at the injection site (i.e., a first location); (c) pulling
back on the
instrument to create negative pressure at the first location and then
injecting the
composition at the first location; (d) slightly withdrawing the instrument
toward the
proximal aspect of the muscular sheath to a second location; (e) pulling back
on the
instrument to create negative pressure at the second location and then
injecting the
composition at the second location; and (0 repeating steps (d) and (e) at any
number
of additional locations, depending on the desired effect, with each additional
location
being positioned closer to the proximal-most aspect of the muscular sheath as
compared to the immediately preceding location. The one or more than one
location
of a single injection site may further be equally spaced and/or mass
proportionate
aliquots of the composition may be injected at the one or more than locations.
Therefore, the present disclosure provides for the injection of the
composition at a
plurality of locations, such as two or more, three or more, or four or more
locations, at
one or more than one depth along an injection site. The composition is
therefore
administered in multiple layers along the path of the injection instrument at
an
injection site.
[0065] The present disclosure also contemplates the locations of injection
being at a
plurality of injection sites, in addition to or in place of the locations of
injection at a
single injection site. The plurality of injection sites, for example, two or
more, three or
more, or four or more injection sites, may be spaced evenly along the muscle
fibres of
the muscle to be injected for uniform distribution of the composition.
Alternatively,
the injection sites may be concentrated at one or more than one position along
the
muscle. The position of the one or more than one injection sites and the
distribution of
the HA composition along the muscle will depend on the desired cosmetic and/or
muscle performance effect of the muscle to be treated. For example, the
injection sites
may be spaced apart by about lmm to about 50cm, or any amount therebetween, or
spaced apart by about lmm to about 45cm or any amount therebetween, for
example,
the injection sites may be spaced apart by about lmm, 2.5mm, 5mm, 0.75mm, lcm,
1.5cm, 2cm, 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, 15 cm, 20cm, 25cm, 30cm,
35cm, 40cm within the biceps muscle (biceps brachii), the brachialis muscle,
the
brachioradialus muscle, the triceps muscle (triceps brachii), the deltoid
muscle and the
CA 3059521 2019-10-21
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pectoral muscles. For example, 1 to 100, or any amount therebetween, injection
sites,
spaced apart by about lmm to about 50cm, or any amount therebetween, for
example,
injection sites spaced apart by about lmm, 2.5mm, 5mm, 0.75mm, lcm, 1.5cm,
2cm,
3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, 15 cm, 20cm, 25cm, 30cm, 35cm, 40cm,
45cm may be used for injection within the hamstrings, such as the biceps
femoris,
semitendinosus and semimembranosus muscles of the hamstrings; the quadriceps,
including the rectus femoris, vastus lateralis, vastus medialis and vastus
intermedius
muscles of the quadriceps; the calves, including the gastrocnemius, tibialis
anterior,
and the soleus muscles of the calves; and the gluteus maximus, gluteus medius
and
gluteus minimus of the buttocks.
[0066] The volume of the composition injected at each location within a muscle
may
vary depending on the muscle injected, the number of locations injected and/or
the
desired effect. For example, the volume of the composition injected at each
location
can be in the range of approximately 0.01cc/kg of body weight to approximately
6.0cc/kg of body weight, or any amount therebetween, for example, from
approximately 0.01cc to approximately 5.0cc/kg of body weight, from
approximately
0.01cc to approximately 4.0cc/kg of body weight, from approximately 0.01cc to
approximately 3.0cc/kg of body weight, from approximately 0.01cc to
approximately
2.0cc/kg of body weight, from approximately 0.01cc to approximately lcc/kg of
body
weight, or from approximately 0.01cc to approximately 0.5cc/kg of body weight,
or
any amount therebetween. For example, from about 0.01, 0.05, 0.08, 0.1, 0.2,
0.3, 0.4,
0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.4, 1.5, 1.6, 1.7, 1.8, 2.0, 2.1,
2.2, 2.5, 2.8, 2.9,
3.0, 3.1, 3.5, 3.6, 3.7, 3.8, 4.0, 4.2, 4.3, 4.5, 4.8, 4.9, 5.0, 5.2, 5.4,
5.5, 5.7, 5.8, 5.9,
6.0cc/kg of body weight, or any amount therebetween, may be injected per
location
within a muscle.
[0067] Injections comprising the same amount, or different amounts, of HA
composition, may also be repeated on a periodic basis, for example, a repeat
treatment
every month, every 2 months, every 3 months, every 4 months, every 6 months,
every
8 months, every 12 months, every 15 months, every 18 months, every 2 years,
every
2.5 years, or a combination thereof, as desired. Repeat treatments may be
performed
to either maintain the muscular volume or progressively augment the muscular
volume over time.
CA 3059521 2019-10-21
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[0068] The injections of the composition comprising HA and/or its derivatives
thereof
may be done with the assistance of an ultrasound machine, or any other method
for
imaging muscle that is known in the art, to visualize the muscle of interest
while
injecting the composition. While visualizing the muscle using ultrasound or
any other
suitable method known in the art, the HA composition may be injected using
real-time
guidance to guide the exact location of injection of the HA composition.
[0069] The present disclosure contemplates intramuscular injection of the
composition described herein using a cannula, needle, syringe or any other
instrument
for injection of a solution into a human. The length of the cannula, needle or
other
instrument used will vary depending on the injection site and the particular
person to
be injected as the thickness of the fat pad and skin over a specific injection
site will
vary to a great extent between individuals and injection sites. Intramuscular
injections
must go into the muscle below the subcutaneous layer, therefore a relatively
long
instrument will be used to ensure the composition is injected into the muscle.
For
example, but without limitation, the length of the needle or cannula may vary
between
approximately 2cm to approximately 10cm in length, or any length therebetween.
The
gauge of the needle will vary depending on the viscosity of the injected HA
composition, and the rate of injection desired. The chosen cannula or needle
should
generally be the smallest gauge needle that will allow for suitable injection
rates of
the HA composition, in order to minimize patient discomfort. For example, but
without limitation, the gauge of the needle or cannula may vary between a 14-
gauge
needle or cannula and a 30-gauge needle or cannula, and any sized gauge needle
or
cannula therebetween.
[0070] The amount of the composition injected will be dependent on the
injection site
and desired effect. Generally, but without limitation, approximately 0.01cc/kg
of body
weight to approximately 6.0cc/kg of body weight of the composition will be
injected
per muscle of a person, or any amount therebetween, for example, from
approximately 0.01cc to approximately 5.0cc/kg of body weight, from
approximately
0.01cc to approximately 4.0cc/kg of body weight, from approximately 0.01cc to
approximately 3.0cc/kg of body weight, from approximately 0.01cc to
approximately
2.0cc/kg of body weight, from approximately 0.01cc to approximately 1.0cc/kg
of
body weight, or from approximately 0.01cc to approximately 0.5cc/kg of body
CA 3059521 2019-10-21
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weight, or any amount therebetween. For example, from about 0.01, 0.05, 0.08,
0.1,
0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.4, 1.5, 1.6, 1.7,
1.8, 2.0, 2.1, 2.2,
2.5, 2.8, 2.9, 3.0, 3.1, 3.5, 3.6, 3.7, 3.8, 4.0, 4.2, 4.3, 4.5, 4.8, 4.9,
5.0, 5.2, 5.4, 5.5,
5.7, 5.8, 5.9, 6.0cc/kg of body weight, or any amount therebetween, may be
injected
per muscle of a person.
[0071] As an example, which is not to be considered limiting, for injection
into a
muscle of the arm, such as the triceps or the biceps, it is contemplated that
approximately 0.01cc/kg of body weight to approximately 2.0cc/kg of body
weight of
the composition may be injected per triceps or biceps muscle, or any amount
therebetween, for example, from approximately 0.01cc/kg of body weight to
approximately 1.8cc/kg of body weight in total per triceps or biceps muscle,
from
approximately 0.01cc/kg of body weight to approximately 1.7cc/kg of body
weight in
total per triceps or biceps muscle, from approximately 0.01cc/kg of body
weight to
approximately 1.6cc/kg of body weight in total per triceps or biceps muscle,
from
approximately 0.01cc/kg of body weight to approximately 1.5cc/kg of body
weight in
total per triceps or biceps muscle, or any amount therebetween. If multiple
injection
sites are used along the muscle, then the amount of the HA composition to be
injected
may be divided as required between injection sites and locations at the
injection sites.
[0072] If injecting into the brachialis muscle of the arm, it is contemplated,
for
example, without limitation, that approximately 0.01cc/kg of body weight to
approximately 1.5cc/kg of body weight of the composition may be injected per
brachialis muscle, or any amount therebetween, for example, from approximately
0.01cc/kg of body weight to approximately 1.4 cc/kg of body weight in total
per
brachialis muscle, from approximately 0.01cc/kg of body weight to
approximately
1.3 cc/kg of body weight in total per brachialis muscle, from approximately
0.01cc/kg
of I;ody weight to approximately 1.2cc/kg of body weight in total per
brachialis
muscle, from approximately 0.01cc/kg of body weight to approximately 1.0cc/kg
of
body weight in total per brachialis muscle, or any amount therebetween. If
multiple
injection sites are used along the muscle, then the amount of the HA
composition to
be injected may be divided as required between injection sites and locations
at the
injection sites.
CA 3059521 2019-10-21
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[0073] As a further example, which is not to be considered limiting, for
injection into
a brachioradialis muscle, it is contemplated that approximately 0.01cc/kg of
body
weight to approximately 0.8cc/kg of body weight of the composition may be
injected
per brachioradialis muscle, or any amount therebetween, for example, from
approximately 0.01cc/kg of body weight to approximately 0.75cc/kg of body
weight
in total per brachioradialis muscle, from approximately 0.01cc/kg of body
weight to
approximately 0.7cc/kg of body weight in total per brachioradialis muscle,
from
approximately 0.01cc/kg of body weight to approximately 0.6cc/kg of body
weight in
total per brachioradialis muscle, from approximately 0.01cc/kg of body weight
to
approximately 0.5cc/kg of body weight in total per brachioradialis muscle, or
any
amount therebetween. If multiple injection sites are used along the muscle,
then the
amount of the HA composition to be injected may be divided as required between
injection sites and locations at the injection sites.
[0074] For injection into the superficial compartment wrist flexor muscle, for
example, which is not to be considered limiting, approximately 0.01cc/kg of
body
weight to approximately 0.8cc/kg of body weight may be injected per
superficial wrist
flexor group, or any amount therebetween, for example, from approximately
0.01cc/kg of body weight to approximately 0.75cc/kg of body weight in total
per
superficial wrist flexor group, from approximately 0.01cc/kg of body weight to
approximately 0.7cc/kg of body weight in total per superficial wrist flexor
group,
from approximately 0.01cc/kg of body weight to approximately 0.6cc/kg of body
weight in total per superficial wrist flexor group, from approximately
0.01cc/kg of
body weight to approximately 0.5cc/kg of body weight in total per superficial
wrist
flexor group, or any amount therebetween. If multiple injection sites are used
along
the superficial wrist flexor group, then the amount of the HA composition to
be
injected may be divided as required between injection sites and locations at
the
injection sites.
[0075] Another example, which is not to be considered limiting, is provided
for
injection into the calf muscles of the leg, such as the lateral gastrocnemius,
the medial
gastrocnemius, or the soleus muscles. Approximately 0.01cc/kg of body weight
to
approximately 1.3cc/kg of body weight may be injected per lateral
gastrocnemius
muscle, or any amount therebetween, for example, from approximately 0.01cc/kg
of
CA 3059521 2019-10-21
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body weight to approximately 1.2cc/kg of body weight in total per lateral
gastrocnemius muscle, from approximately 0.01cc/kg of body weight to
approximately 1.1cc/kg of body weight in total per lateral gastrocnemius
muscle,
from approximately 0.01cc/kg of body weight to approximately 1.0cc/kg of body
weight in total per lateral gastrocnemius muscle, or any amount therebetween.
Approximately 0.01cc/kg of body weight to approximately 1.3cc/kg of body
weight
may be injected per medial gastrocnemius muscle, or any amount therebetween,
for
example, from approximately 0.01cc/kg of body weight to approximately 0.6cc/kg
of
body weight in total per medial gastrocnemius muscle, from approximately
0.01cc/kg
to of body weight to approximately 0.5cc/kg of body weight in total per
medial
gastrocnemius muscle, or any amount therebetween. Approximately 0.01cc/kg of
body weight to approximately 3.2cc/kg of body weight may be injected per
soleus
muscle, or any amount therebetween, for example, from approximately 0.01cc/kg
of
body weight to approximately 3.1cc/kg of body weight in total per soleus
muscle,
from approximately 0.01cc/kg of body weight to approximately 3.0cc/kg of body
weight in total per soleus muscle, or any amount therebetween. If multiple
injection
sites are used along the muscle, then the amount of the HA composition to be
injected
may be divided as required between injection sites and locations at the
injection sites.
[0076] As a further non-limiting example, it is contemplated that
approximately
0.01cc/kg of body weight to approximately 5.0cc/kg of body weight of the
composition may be injected per quadricep muscle, or any amount therebetween,
for
example, from approximately 0.01cc/kg of body weight to approximately 4.9cc/kg
of
body weight in total per quadricep muscle, from approximately 0.01cc/kg of
body
weight to approximately 4.8cc/kg of body weight in total per quadricep muscle,
from
approximately 0.01cc/kg of body weight to approximately 4.7cc/kg of body
weight in
total per quadricep muscle, or any amount therebetween, with approximately
0.01cc/kg of body weight to approximately 1.1cdkg of body weight of the
composition, for example, injected into the rectus femoris of the quadricep,
or any
amount therebetween, approximately 0.01cc/kg of body weight to approximately
2.1cc/kg of body weight of the composition, for example, injected into the
vastus
lateralis of the quadriceps, or any amount therebetween, and approximately
0.01cc/kg
of body weight to approximately 1.8cc/kg of body weight of the composition,
for
example, injected into the vastus medialis of the quadriceps, or any amount
CA 3059521 2019-10-21
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therebetween. If multiple injection sites are used along the muscle, then the
amount of
the HA composition to be injected may be divided as required between injection
sites
and locations at the injection sites.
[0077] Another example, which is not to be considered limiting, for injection
into a
hamstring muscle, it is contemplated that approximately 0.01cc/kg of body
weight to
approximately 5.6cc/kg of body weight of the composition may be injected per
hamstring muscle, or any amount therebetween, for example, from approximately
0.01cc/kg of body weight to approximately 5.5cc/kg of body weight in total per
hamstring muscle, from approximately 0.01cc/kg of body weight to approximately
113 5.4cc/kg of body weight in total per hamstring muscle, from
approximately 0.01cc/kg
of body weight to approximately 5.3cc/kg of body weight in total per hamstring
muscle, or any amount therebetween, with approximately 0.01cc/kg of body
weight to
approximately 2.1cc/kg of body weight of the composition, for example,
injected into
the biceps femoris of the hamstring, or any amount therebetween, approximately
0.01cc/kg of body weight to approximately 2.9cc/kg of body weight of the
composition, for example, injected into the semitendinosis/semimembranosis of
the
hamstring, or any amount therebetween, and approximately 0.01cc/kg of body
weight
to approximately 0.6cc/kg of body weight of the composition, for example,
injected
into the gracilis of the hamstring, or any amount therebetween. If multiple
injection
sites are used along the muscle, then the amount of the HA composition to be
injected
may be divided as required between injection sites and locations at the
injection sites.
[0078] For injection into the muscles of the buttocks, such as the gluteus
maximus or
the gluteus medius, for example, which is not to be considered limiting,
approximately 0.01cc/kg of body weight to approximately 6.0cc/kg of body
weight
may be injected per gluteus maximus, or any amount therebetween, for example,
from
approximately 0.01cc/kg of body weight to approximately 5.8cc/kg of body
weight in
total per gluteus maximus muscle, from approximately 0.01cc/kg of body weight
to
approximately 5.7cc/kg of body weight in total per gluteus maximus muscle,
from
approximately 0.01cc/kg of body weight to approximately 5.5 cc/kg of body
weight in
total per gluteus maximus muscle, or any amount therebetween. If injecting
into the
gluteus medius, approximately 0.01cc/kg of body weight to approximately
2.3cc/kg of
body weight may be injected per gluteus medius, or any amount therebetween,
for
CA 3059521 2019-10-21
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= example, from approximately 0.01cc/kg of body weight to approximately 2.2
cc/kg of
body weight in total per gluteus medius muscle, from approximately 0.01cc/kg
of
body weight to approximately 2.1cc/kg of body weight in total per gluteus
medius
muscle, from approximately 0.01cc/kg of body weight to approximately 2.0cc/kg
of
body weight in total per gluteus medius muscle, or any amount therebetween. If
multiple injection sites are used along the muscle, then the amount of the HA
composition to be injected may be divided as required between injection sites
and
locations at the injection sites.
[0079] As a further non-limiting example, it is contemplated that
approximately
0.01cc/kg of body weight to approximately 2.3cc/kg of body weight of the
composition may be injected per deltoid muscle, or any amount therebetween,
for
example, from approximately 0.01cc/kg of body weight to approximately 2.2
cc/kg of
body weight in total per deltoid muscle, from approximately 0.01cc/kg of body
weight
to approximately 2.1cc/kg of body weight in total per deltoid muscle, from
approximately 0.01cc/kg of body weight to approximately 2.0 cc/kg of body
weight in
total per deltoid muscle, or any amount therebetween. If multiple injection
sites are
used along the muscle, then the amount of the HA composition to be injected
may be
divided as required between injection sites and locations at the injection
sites.
[0080] As a further example, which is not to be considered limiting, for
injection into =
a trapezius muscle, it is contemplated that approximately 0.01cc/kg of body
weight to
approximately 2.3cc/kg of body weight of the composition may be injected per
trapezius muscle, or any amount therebetween, for example, from approximately
0.01cc/kg of body weight to approximately 2.2 cc/kg of body weight in total
per
trapezius muscle, from approximately 0.01cc/kg of body weight to approximately
2.1cc/kg of body weight in total per trapezius muscle, from approximately
0.01cc/kg
of body weight to approximately 2.0 cc/kg of body weight in total per
trapezius
muscle, or any amount therebetween. If multiple injection sites are used along
the
muscle, then the amount of the HA composition to be injected may be divided as
required between injection sites and locations at the injection sites.
[0081] For injection into the pectoralis major muscle, for example, which is
not to be
considered limiting, approximately 0.01cc/kg of body weight to approximately
3.8cc/kg of body weight may be injected per pectoralis major muscle, or any
amount
CA 3059521 2019-10-21
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therebetween, for example, from approximately 0.01cc/kg of body weight to
approximately 3.6cc/kg of body weight in total per pectoralis major muscle,
from
approximately 0.01cc/kg of body weight to approximately 3.5cc/kg of body
weight in
total per pectoralis major muscle, from approximately 0.01cc/kg of body weight
to
approximately 3.4cc/kg of body weight in total per pectoralis major muscle, or
any
amount therebetween. If multiple injection sites are used along the muscle,
then the
amount of the HA composition to be injected may be divided as required between
injection sites and locations at the injection sites.
[0082] For injection into the muscles of the back, such as the latissmus dorsi
muscle,
for example, which is not to be considered limiting, approximately 0.01cc/kg
of body
weight to approximately 4.4cc/kg of body weight may be injected per latissmus
dorsi
muscle, or any amount therebetween, for example, from approximately 0.01cc/kg
of
body weight to approximately 4.3cc/kg of body weight in total per latissmus
dorsi
= muscle, from approximately 0.01cc/kg of body weight to approximately
4.2cc/kg of
body weight in total per latissmus dorsi muscle, from approximately 0.01cc/kg
of
body weight to approximately 4.1cc/kg of body weight in total per latissmus
dorsi
muscle, or any amount therebetween. If multiple injection sites are used along
the
muscle, then the amount of the HA composition to be injected may be divided as
required between injection sites and locations at the injection sites.
[0083] As a further example, which is not to be considered limiting, for
injection into
a muscle in the abdomen, such as the rectus abdominis muscle, it is
contemplated that
approximately 0.01cc/kg of body weight to approximately 0.5cc/kg of body
weight of
the composition may be injected per rectus abdominis muscle, or any amount
therebetween, for example, from approximately 0.01cc/kg of body weight to
approximately 0.45cc/kg of body weight in total per rectus abdominis muscle,
from
approximately 0.01cc/kg of body weight to approximately 0.4cc/kg of body
weight in
total per rectus abdominis muscle, or any amount therebetween. If multiple
injection
sites are used along the muscle, then the amount of the HA composition to be
injected
may be divided as required between injection sites and locations at the
injection sites.
[0084] The volume of the HA composition and/or any derivative thereof may be
approximately 0.01% to approximately 25% of the total muscle volume of the
muscle
to be injected, or any amount therebetween. For example, the volume of the HA
=
CA 3059521 2019-10-21
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composition and/or any derivative thereof may be from about 0.01, 0.02, 0.05,
0.08,
1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0,
8.5, 9.0, 9.5, 10.0,
10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5, 15.0, 16.0, 17.0, 18.0,
19.0, 20.0,
21.0, 22.0, 23.0, 24.0% of the total muscle volume of the muscle to be
injected. The
total volume of muscle injected will vary depending on the desired cosmetic
and/or
muscle performance effect. The increase in muscular volume of the muscle as
compared to the muscular volume prior to injecting the HA composition into the
muscle is proportional to the amount of the HA composition injected into the
muscle
of interest, and may continue to persist in the muscle for approximately 6
months to
approximately 2.5 years after the initial injection before being degraded by
enzymatic
degradation (hyaluronidase) and reaction with reactive oxygen species (for
example,
superoxide and peroxynitrite).
[0085] The methods of the present disclosure therefore further contemplate
additional
injections of the composition comprising HA into the same muscle following the
initial injections. At any time after the initial injection, for example, but
without
limitation, approximately one week to approximately two and half years or
later, or
any time therebetween, additional injections into the same muscle may be
performed
to touch-up the shape or contour of the muscle, to maintain muscle
performance, to
maintain muscular volume, or to further augment muscular volume. For example,
the
additional injections may be made approximately 2 months, 3 months, 4'months,
6
months, 9 months, 12 months, 15 months, 18 months, 21 months, 24 months, 26
months, 28 months or 30 months following the initial injection, or any time
period
therebetween, and repeated thereafter. The amount of the additional injections
will
vary depending on the amount initially injected, the injection site, the
effect that is
desired, and/or the amount of the composition that has been resorbed by the
person's
body. As an indication, approximately 0.01cc/kg of body weight to
approximately
6.0cc/kg of body weight of the composition may be injected per muscle of a
person,
or any amount therebetween, following the initial injection.
[0086] For those repeat injections done to maintain muscular volume or
muscular
performance (i.e., no further augmentation of the muscle), the additional
injections of
the composition comprising HA may be repeated every 1, 2, 3, 6, 12, 18, 24 or
30
months, or any time therebetween. Such maintenance injections may comprise low
CA 3059521 2019-10-21
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volume doses, such as, without limitation, doses of approximately 0.1cc/kg to
approximately 1.0 cc/kg of body weight, or any amount therebetween, of the HA
composition may be injected into the muscle of interest. For example, the dose
of the
HA composition and/or any derivative thereof for injection into the muscle of
interest
may be from about 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 0.9, 1.0cc/kg of body
weight, or
any amount therebetween, per repeat injection. The dose injected and the
frequency of
the repeat injections may depend on the physical activity of the individual
patient. If a
patient is more physically active (for example, routinely works-out or
routinely
strength trains), a lower dose and/or less frequent repeat injections may be
desired.
[0087] For those repeat injections done to progressively augment the muscle
over
time (i.e., to achieve a greater muscular volume over time), the additional
injections
of the composition comprising HA may be done in a step-wise manner. As
described
above, a volume ranging from approximately 0.1cc/kg to approximately 6.0cc/kg
of
body weight may be initially injected into the muscle of interest. At a time
after the
initial injection, for example, but without limitation, approximately 1 months
to 8
months or later, or any time therebetween, additional injections into the same
muscle
may be performed to achieve additive effects on the initial injection. For
example,
injections may be repeated every 1, 2, 3, 4, 5, 6, 7, 8 months, or any time
therebetween, after the initial injection, until the desired effect is
achieved. Such
"progressive augmentation" injections may comprise doses of the HA composition
ranging from approximately 0.1cc/kg to approximately 6.0cc/kg of body weight,
or
any amount therebetween. For example, doses from about 0.1, 0.2, 0.3, 0.4,
0.5, 0.6,
0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.4, 1.5, 1.6, 1.7, 1.8, 2.0, 2.1,2.2, 2.5, 2.8,
2.9, 3.0, 3.1,
3.5, 3.6, 3.7, 3.8, 4.0, 4.2, 4.3, 4.5, 4.8, 4.9, 5.0, 5.2, 5.4, 5.5, 5.7,
5.8, 5.9, 6.0cc/kg of
body weight of the HA composition, or any amount therebetween, may be injected
per repeat injection, depending on the desired effect.
[0088] By injecting the composition comprising HA into a muscle of a person,
an
increase in muscular volume of the muscle occurs, which increase may be done
for
cosmetic purposes or to improve muscle function or performance.
[0089] As used herein, the term "cosmetic purpose" means that the increase in
muscular volume by intramuscular injection of the composition comprising HA is
CA 3059521 2019-10-21
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performed to improve the external appearance of the muscle, such as the shape,
profile or contour of the muscle or the muscular definition of the muscle.
[0090] As used herein, the term "muscle function" or "muscle performance"
means
the strength of the muscle, which refers to the amount of force the muscle can
produce
with a single maximal effort, the endurance of the muscle, which refers to the
ability
of the muscle to sustain repeated contractions against a resistance for an
extended
period of time, or both maximal effort and endurance.
[0091] The muscle function of a person prior to the step of injecting the HA
composition can be compared with the muscle function after the step of
injecting, for
example, from about one week to any desired time period after treatment, for
example
from about one week to about two years, or any time period therebetween, for
example, 2 months, 3 months, 6 months, 9 months, 12 months, 15 months, 18
months,
21 months, or any time period therebetween. The muscle function can be
assessed
based on a general questionnaire asking a person to rate their muscle strength
and
muscle endurance, by having the person complete muscle function tests, or
both. For
example, without limitation, muscle function can be assessed by measuring the
power
of the muscle. A person's arm muscle function, for example, may be determined
by
measuring the maximum weight the person is able to lift in a single repetition
(i.e., the
person's one repetition maximum), by measuring the number of times a person
can
lift a certain weight during a certain time period, or by measuring the amount
of time
it takes for a person to lift a certain amount of weights a certain number of
times.
Other methods known to those skilled in the art may also be used to measure
muscle
function. For example, isokinetic dynamometry, as described in the art, may be
used
to quantify muscle strength by assessing dynamic muscle and joint function
under
specific joint velocity conditions controlled and maintained constant by
isokinetic
dynamometers.
[0092] Muscle function is considered improved if a person's answers to the
questionnaire after the step of injecting indicate that the person has more
muscle
strength and/or endurance in the muscle of interest as compared to before the
step of
injecting. Muscle function is also considered improved if the person is able
to
consistently lift more weight in a single repetition, lift a certain weight a
greater
number of times during a specific time period, or lift a certain amount of
weights a
CA 3059521 2019-10-21
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certain number of times within a shorter time period than before the step of
injecting
as compared to before the step of injecting. Further, improvements in force or
power
measurements with isokinetic dynamometry will also indicate an improvement in
muscle function or performance.
[0093] Therefore, the present disclosure provides for a method for increasing
the
muscular volume of a particular muscle of interest in a human, which comprises
the
intramuscular injection of a composition comprising HA into the muscle of
interest.
The intramuscular injection results in an increase in the muscular volume of
the
muscle of interest as compared to the muscular volume of the muscle before it
was
injected with the composition comprising HA. The increase in muscular volume
may
be performed for cosmetic purposes and/or to improve the person's muscle
function.
The muscle injected may be selected from the following group: an arm muscle, a
leg
muscle, a chest muscle, a back muscle, a buttock muscle, or any other muscle
of an
individual.
[0094] The present disclosure also provides for a method of altering a contour
of a
muscle of a human that comprises the steps of obtaining an image of the
contour of
the muscle, determining a new contour of the muscle, injecting a composition
comprising HA into one or more than one location of the muscle, for example,
two or
more, three or more, or four or more locations, to obtain the new contour of
the
muscle, which results in an alteration of the contour of the muscle. The
muscle
injected may be selected from the group of an arm muscle, a leg muscle, a
chest
muscle, a back muscle and a buttock muscle.
[0095] As used herein, the term "contour" in relation to a muscle means the
outline of
the muscle, more specifically, the outline or the line that that defines the
outer shape
of the muscle. The present disclosure contemplates an alteration of the
contour of a
person's muscle.
[0096] To alter the contour of a muscle, an image of the contour of the muscle
is
initially obtained. This can be done using any method that can define the
contour of
the muscle, including, without limitation, photography, magnetic resonance
imaging
(MRI), ultrasound, physical measurements of the area of the body that contains
the
CA 3059521 2019-10-21
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muscle of interest such as circumferential measurements of the area, or a
combination
thereof.
[0097] Once the initial image of the contour of the muscle is obtained, a new
contour
of the muscle can be determined in accordance with the person's desired
result. The
photograph, MRI image, ultrasound image, physical measurements or combination
thereof, of the area of interest are analyzed and the new contour of the
muscle is
mapped, traced or drawn on the photograph, MRI image, or ultrasound image, or
otherwise determined, to depict the new contour of the muscle that is desired.
[0098] To alter the contour of the muscle of interest to reflect the desired
contour, it
may be useful to also physically mark the one or more than one injection
sites, for
example, the two or more, three or more, or four or more injection sites, on
the
individual to be injected. The composition comprising HA that is to be
injected is as
described above.
[0099] The methods of the present disclosure also provide for the
intramuscular
injections of the composition to be done in one or more than one location of a
muscle
to be injected, for example, two or more, three or more, or four or more
locations. The
composition comprising HA may be injected at one to about 100 locations, or
any
amount therebetween, spaced approximately evenly along the muscle fibre of the
muscle to be injected for uniform distribution of the HA composition, or at
any other
locations along the muscle fibre of the muscle, such as concentrated at one or
more
locations along the muscle, depending on the desired effect. Therefore, the
one or
more than one, two or more, three or more, or four or more locations of
injection will
depend on the new contour of the muscle desired and the image of the contour
of the
muscle initially obtained. For example, without limitation, the composition
comprising HA can be injected at one or more than one, two or more, three or
more,
or four or more locations along the length of the muscle or can be injected at
one or
more that one, two or more, three or more, or four or more locations that are
limited to
a specific section of the muscle to increase the muscular volume of that
specific
section of the muscle.
[00100] As described above, the method further contemplates additional
injections of the composition comprising HA into the same muscle following the
CA 3059521 2019-10-21
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initial injections to touch-up the contour of the muscle or to further augment
muscular
volume. These additional injections may be done at any time after the initial
injection,
for example, but without limitation, approximately one week to approximately
two
and half years or later, or any time therebetween, for example, 2 months, 3
months, 4
months, 6 months, 9 months, 12 months, 15 months, 18 months, 21 months, 24
months, 26 months, 28 months or 30 months following the initial injection, or
any
time period therebetween. The volume of the composition injected may be
between
approximately 0.01cc/kg of body weight to approximately 6cc/kg of body weight
per
muscle of a person or any amount therebetween.
[00101] For those repeat injections done to maintain the contour of the
muscle
(i.e., no further augmentation of the muscle), the additional injections of
the
composition comprising HA may be repeated every 1, 2, 3, 6, 12, 18, 24 or 30
months, or any time therebetween. Such maintenance injections may comprise low
volume doses, including, without limitation, doses of approximately 0.1cc/kg
to
approximately 1.0 cc/kg of body weight, or any amount therebetween, of the HA
composition for injection into the muscle of interest. For example, the dose
of the HA
composition and/or any derivative thereof for injection into the muscle of
interest may
be from about 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 0.9, 1.0cc/kg of body
weight, or any
amount therebetween, per repeat injection. The dose injected and the frequency
of the
repeat injections may depend on the physical activity of the individual
patient. If a
patient is more physically active (for example, routinely works-out or
routinely
strength trains), a lower dose and/or less frequent repeat injections may be
desired.
[00102] For those repeat injections done to progressively
augment the contour
of the muscle over time, the additional injections of the composition
comprising HA
may be done in a step-wise manner. As described above, a volume ranging from
approximately 0.1cc/kg to approximately 6.0cc/kg of body weight may be
initially
injected into the muscle of interest. At a time after the initial injection,
for example,
but without limitation, approximately 1 months to 8 months or later, or any
time
therebetween, additional injections into the same muscle may be performed to
achieve
additive effects on the initial injection. For example, injections may be
repeated every
1, 2, 3, 4, 5, 6, 7 or 8 months, or any time therebetween, until the desired
effect is
achieved. Such "progressive augmentation" injections may comprise doses of the
HA
CA 3059521 2019-10-21
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composition ranging from approximately 0.1cc/kg to approximately 6.0cc/kg of
body
weight, or any amount therebetween. For example, from about 0.1, 0.2, 0.3,
0.4, 0.5,
0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.4, 1.5, 1.6, 1.7, 1.8, 2.0, 2.1, 2.2,
2.5, 2.8, 2.9, 3.0,
3.1, 3.5, 3.6, 3.7, 3.8, 4.0, 4.2, 4.3, 4.5, 4.8, 4.9, 5.0, 5.2, 5.4, 5.5,
5.7, 5.8, 5.9,
6.0cc/kg of body weight, or any amount therebetween, may be injected per
repeat
injection, depending on the desired effect.
[00103] The present disclosure also provides for a use of a
composition
comprising HA for increasing muscular volume of a muscle in a human compared
to
the muscular volume of the muscle in the absence of said composition. The
composition comprising HA is as described herein and is for injection into the
muscle
of the human for cosmetic purposes or for improving the muscle function of the
muscle.
[00104] The present disclosure also provides for a kit
comprising a composition
comprising HA and instructions for intramuscular injection of the composition
into a
muscle in a human.
[00105] The present invention will be further illustrated in
the following
examples.
Examples
[00106] In total, nine healthy patients have been treated with
hyaluronic acid
for augmentation of select muscles. The treatments were done for either
cosmetic
purposes, to improve muscle function or performance, or for both cosmetic
purposes
and to improve muscle function. This resulted in a total of 19 muscle pairs
(i.e.,
bilateral), or 38 individual muscles, being injected with hyaluronic acid. The
various
heads of the triceps, biceps, deltoid and gastrocnemius are counted as a
single muscle.
The superficial flexor compartment of the wrist is also considered a single
muscle.
[00107] None of the patients have experienced complications
with the
hyaluronic acid treatments. All nine patients had short term follow-ups (i.e.,
at least at
1 week, 2 weeks, 6 weeks or 8 weeks post-injection) and six of the patients
had longer
term follow-ups (i.e., greater than one year post-injection). The longest long-
term
follow-up is currently 28 months.
CA 3059521 2019-10-21
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Example 1. Gluteus Maximus Augmentation ¨ Patient A:
[00108] A healthy 26 year old female weighing approximately
48kg, with a
height of approximately 165cm was selected to undergo gluteus maximus
augmentation. The patient had no pre-existing medical conditions and consented
to
the procedure. The patient had been previously injected with lcc doses of
hyaluronic
acid at remote locations and showed no clinical evidence of unfavourable
reactions at
one year post treatment.
[00109] The patient was undressed from the waist down to her
underwear and
had been instructed to wear a thong undergarment to provide for a completely
exposed gluteal surface.
[00110] Digital photographs were taken against a white
backdrop at five level
angles: posterior median, mid-scapular (right and left), and mid-axillary
(right and
left). Photographs were then printed on 4"x6" photo paper and 8.5"x 11" plain
paper
(see Figures lA and 2A). Photographs were shown to the patient and the desired
clinical augmentation lines were sketched on the plain paper in accordance
with the
patient's wishes. Injection sites were marked on the plain paper with an "X"
and
subsequently marked on the corresponding sites on the patient with a black
surgical
marker.
[00111] Thirty minutes prior to the procedure, the patient was
given medication
in the form of oral oxycodone 10mg and dimenhydrinate 50mg in order to
palliate any
secondary injection pain.
[00112] 20cc of cross-linked sodium hyaluronate (Modelis
Shape) was
prepared for intra-muscular injection by mixing thoroughly but gently with a
2%
Xylocaine solution (2cc sodium h}41uronate was mixed with 0.25cc 2% Xylocaine
solution via 3cc syringe; the resulting 2.25cc suspension was transferred into
the 3cc
syringe and the process repeated). The resulting suspension was transferred
into a
syringe and a 25G 1.5" large bore needle was attached and set aside for
injection.
[00113] The area to be treated was cleaned thoroughly with
sterile gauze
soaked in Chlorhexidine 2% with 4% isopropyl alcohol. Intramuscular injection
was
achieved with a perpendicular approach to the skin at the pre-determined "X"
injection sites. 1.125cc was injected at each of 20 injection sites. The
needle was
CA 3059521 2019-10-21
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advanced through the subcutaneous tissue and pierced through the proximal
muscular
sheath. Injections were subsequently deposited at locations within the gluteus
maximus muscle ranging from about 0.1cm to about 3cm from the proximal aspect
of
the muscular sheath. Negative pressure was applied prior to any injection to
assure
that the vasculature was not injected. Manual pressure was repetitively
applied to
injection sites to ensure even distribution of the injectable composition in
the local
surrounding tissues. Clinical response was observed after each injection.
Manual
pressure was applied to any bleeding from an injection site and hemostasis was
achieved as a contingency for the advancement to the next injection site. The
entire
process was duplicated for the contralateral side.
Results:
[00114] The patient had a subsequent follow-up at 8 weeks
without any signs
of complication. Digital photographs were taken in a manner identical to that
described above at 8 weeks post-injection (see Figures 1B and 2B). Persistent
volume
augmentation and favourable cosmetic outcome was observed at 8 weeks post-
injection.
Example 2. Gluteus Maximus Augmentation ¨ Patient B:
[00115] A healthy 35 year old female weighing approximately
63kg, with a
height of approximately 170cm was selected to undergo gluteus maximus
augmentation. The patient had no pre-existing medical conditions and consented
to
the procedure. The patient had been previously injected with lcc doses of
hyaluronic
acid at remote locations and showed no clinical evidence of unfavourable
reactions at
one year post treatment.
[00116] The patient was undressed from the waist down to her
underwear and
had been instructed to wear a thong undergarment to provide for a completely
exposed gluteal surface.
[00117] Digital photographs were taken against a white
backdrop at five level
angles: posterior median, mid-scapular (right and left), and mid-axillary
(right and
left). Photographs were then printed on 4"x6" photo paper and 8.5"x 11" plain
paper
(see Figure 3A). Photographs were shown to the patient and the desired
clinical
augmentation lines were sketched on the plain paper in accordance with the
patient's
CA 3059521 2019-10-21
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wishes. Injection sites were marked on the plain paper with an "X" and
subsequently
marked on the corresponding sites on the patient with a black surgical marker.
[00118] Thirty minutes prior to the procedure, the patient was
given medication
in the form of oral oxycodone 10mg and dimenhydrinate 50mg in order to
palliate any
secondary injection pain.
[00119] 30cc of cross-linked sodium hyaluronate (Modelis
Shape) was
prepared for intra-muscular injection as outlined in Example 1.
[00120] The area to be treated was cleaned with Chlorhexidine
2% with 4%
isopropyl alcohol. Intramuscular injection was achieved with a perpendicular
approach to the skin at the pre-determined "X" injection sites. 1.125cc was
injected at
each of 30 injection sites. The needle was advanced through the subcutaneous
tissue
and pierced through the proximal muscular sheath. Injections were subsequently
deposited at locations within the gluteus maximus muscle ranging from about
0.1cm
to about 3cm from the proximal aspect of the muscular sheath. Negative
pressure was
applied prior to any injection to assure that the vasculature was not
injected. Manual
pressure was repetitively applied to injection sites to ensure even
distribution of the
injectable composition in the local surrounding tissues. Clinical response was
observed after each injection. Manual pressure was applied to any bleeding
from an
injection site and hemostasis was achieved as a contingency for the
advancement to
the next injection site. The entire process was duplicated for the
contralateral side.
Results:
[00121] The patient had subsequent follow-ups at 8 weeks and
at 6 months
without any signs of complication. Digital photographs were taken in a manner
identical to that described above at 6 months post-injection (see Figure 3B).
Persistent
volume augmentation and favourable cosmetic outcome was observed at 6 months
post-injection.
Example 3. Castrocnemius Augmentation:
[00122] A healthy 36 year old male weighing approximately
94kg, with a
height of approximately 180cm was selected to undergo gastrocnemius
augmentation.
The patient had no pre-existing medical conditions and consented to the
procedure.
The patient had been previously injected with lcc doses of hyaluronic acid at
remote
CA 3059521 2019-10-21
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locations and showed no clinical evidence of unfavourable reactions at one
year post
treatment.
[00123] The patient was undressed from the waist down to his
undergarments
and had been instructed to shave distal legs clean to provide for a completely
exposed
surface.
[00124] Digital photographs were taken against a white
backdrop at four level
angles: posterior neutral, posterior plantar-flexion, anterior neutral,
anterior plantar-
flexion. Photographs were then printed on 4"x6" photo paper and 8.5"x 11"
plain
paper (see Figure 4A). Photographs were shown to the patient and the desired
clinical
augmentation lines were sketched on the plain paper in accordance with the
patient's
wishes. Injection sites were marked on the plain paper with an "X" along the
inferior
border of the two muscle bellies of gastrocnemius and subsequently marked on
the
corresponding sites on the patient with a black surgical marker.
[00125] Thirty minutes prior to the procedure, the patient was
given medication
in the form of oral oxycodone 10mg and dimenhydrinate 50mg in order to
palliate any
secondary injection pain.
[00126] lOcc of cross-linked sodium hyaluronate (Moddlis
Shape) was
prepared for intra-muscular injection as outlined in Example 1.
[00127] The area to be treated was cleaned thoroughly using
Chlorhexidine 2%
with 4% isopropyl alcohol. Intramuscular injection was achieved with a
perpendicular
approach to the skin at the pre-determined "X" injection sites. 1.125cc was
injected at
each of 10 injection sites. The needle was advanced through the subcutaneous
tissue
and pierced through the proximal muscular sheath. Injections were subsequently
deposited at locations within the gastrocnemius muscle ranging from about
0.1cm to
about 3cm from the proximal aspect of the muscular sheath. Negative pressure
was
applied prior to any injection to assure that the vasculature was not
injected. Manual
pressure was repetitively applied to injection sites to ensure even
distribution of the
injectable composition in the local surrounding tissues. Clinical response was
observed after each injection. Great care was taken to observe the area for
signs of
ischemic tissue that might herald the development of compartment syndrome.
Manual
pressure was applied to any bleeding from an injection site and hemostasis was
CA 3059521 2019-10-21
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achieved as a contingency for the advancement to the next injection site. The
entire
process was duplicated for the contralateral side.
Results:
[00128] The patient had subsequent follow-ups at 8, 12, 14,
20, 38, 40, 46, 52,
66, and 90 weeks without any signs of complication. Digital photographs were
taken
in a manner identical to that described above at 52 weeks (1 year) post-
injection (see
Figure 4B). Persistent volume augmentation and favourable cosmetic outcome was
observed at 90 weeks post-injection.
Example 4. Triceps Augmentation:
[00129] A healthy 36 year old male weighing approximately 94kg, with a
height of approximately 180cm was selected to undergo triceps augmentation.
The
subject had no pre-existing medical conditions and consented to the procedure.
The '
patient had been previously injected with lcc doses of hyaluronic acid at
remote
locations and showed no clinical evidence of unfavourable reactions at one
year post
treatment.
[00130] The patient was undressed from the waist up. Digital
photographs were
taken against a white backdrop at four level angles for each arm: posterior
flexion,
posterior extension, anterior flexion, and anterior extension. Photographs
were then
printed on 4"x6" photo paper and 8.5"x 11" plain paper (see Figure 5A).
Photographs
were shown to the patient and the desired clinical augmentation lines were
sketched
on the plain paper in accordance with the patient's wishes. Five to seven
injection
sites were marked on the plain paper with an "X" along the lateral and long
heads of
the triceps of both arms and subsequently marked on the corresponding sites on
the
patient with a black surgical marker.
[00131] Thirty minutes prior to the procedure, the patient was given
medication
in the form of oral oxycodone 10mg and dimenhydrinate 50mg in order to
palliate any
secondary injection pain.
[00132] 15cc of cross-linked sodium hyaluronate (Modelis
Shape) was
prepared for intra-muscular injection as outlined in Example 1.
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[00133] The treatment area was cleaned thoroughly using
Chlorhexidine 2%
with 4% isopropyl alcohol. Intramuscular injection was achieved with a
perpendicular
approach to the skin at the pre-determined "X" injection sites. Approximately
16.875cc was distributed in total by injection between each of the pre-
determined
triceps injection sites; aliquot volumes at each location within the muscle
were based
on the desired cosmetic outcome. The needle was advanced through the
subcutaneous
tissue and pierced through the proximal muscular sheath. Injections were
subsequently deposited at locations within the triceps muscle ranging from
about
0.1cm to about 3cm from the proximal aspect of the muscular sheath. Negative
pressure was applied prior to any injection to assure that the vasculature was
not
injected. Manual pressure was repetitively applied to injection sites to
ensure even
distribution of the injectable composition in the local surrounding tissues.
Clinical
response was observed after each injection. Manual pressure was applied to any
bleeding from an injection site and hemostasis was achieved as a contingency
for the
advancement to the next injection site. The entire process was duplicated for
the
contralateral side.
Results:
[00134] The patient had subsequent follow-ups 8, 12, 14, 20,
38, 40, 46, 52, 66,
and 90 weeks without any signs of complication. Digital photographs were taken
in a
manner identical to that described above at 14 weeks post-injection (Figures
5B).
Persistent volume augmentation and favourable cosmetic outcome was observed at
90
weeks post-injection.
Example 5. Biceps Augmentation:
[00135] A healthy 36 year old male weighing approximately
94kg, with a
height of approximately 180cm was selected to undergo biceps augmentation. The
subject had no pre-existing medical conditions and consented to the procedure.
The
patient had been previously injected with lcc doses of hyaluronic acid at
remote
locations and showed no clinical evidence of unfavourable reactions at one
year post
treatment.
[00136] The patient was undressed from the waist up. Digital photographs
were
taken against a white backdrop at four level angles for each arm: posterior
flexion,
posterior extension, anterior flexion, and anterior extension. Photographs
were then
CA 3059521 2019-10-21
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printed on 4"x6" photo paper and 8.5"x 11" plain paper (see Figure 5A).
Photographs
were shown to the patient and the desired clinical augmentation lines were
sketched
on the plain paper in accordance with the patient's wishes. Injection sites
were
marked on the plain paper with an "X" along the short and long heads of the
biceps of
both arms and subsequently marked on the corresponding sites on the patient
with a
black surgical marker. Three to five injection sites were marked per bicep
head
depending on the corresponding head length and desired muscular enhancement.
[00137] Thirty minutes prior to the procedure, the patient was
given medication
in the form of oral oxycodone 10mg and dimenhydrinate 50mg in order to
palliate any
secondary injection pain.
[00138] 10 cc of cross-linked sodium hyaluronate (Mod6lis
Shape) was
prepared for intra-muscular injection as outlined in Example 1.
[00139] The treatment area was cleaned thoroughly using
Chlorhexidine 2%
with 4% isopropyl alcohol. Intramuscular injection was achieved with a
perpendicular
approach to the skin at the pre-determined "X" injection sites. Approximately
11.25cc
was distributed in total by injection between each of the pre-determined
biceps
injection sites; aliquot volumes at each location within the muscle were based
on the
desired cosmetic outcome. Negative pressure was applied prior to any injection
to
assure that the vasculature was not injected. Manual pressure was repetitively
applied
to injection sites to ensure even distribution of the injectable composition
in the local
surrounding tissues. Clinical response was observed after each injection.
Manual
pressure was applied to any bleeding from an injection site and hemostasis was
achieved as a contingency for the advancement to the next injection site. The
entire
process was duplicated for the contralateral side.
Results:
[00140] The patient had subsequent follow-ups at 2, 8, 26, 28,
34, 40, 54, and
78 weeks without any signs of complication. Digital photographs were taken in
a
manner identical to that described above at 2 weeks post-injection (see Figure
5B).
Persistent volume augmentation and favourable cosmetic outcome was observed at
78
weeks post-injection.
CA 3059521 2019-10-21
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Example 6. Brachioradialis and Wrist Flexor Compartment Augmentation:
[00141] A healthy 36 year old male weighing approximately
94kg, with a
height of approximately 180cm was selected to undergo brachoradialis
augmentation.
The patient had no pre-existing medical conditions and consented to the
procedure.
The patient had been previously injected with l cc doses of hyaluronic acid at
remote
locations and showed no clinical evidence of unfavourable reactions at one
year post
treatment.
[00142] The patient was undressed from the waist up. Digital
photographs were
;taken against a white backdrop at four level angles for each arm: dorsal
flexion, dorsal
extension, palmar flexion, and palmar extension. Photographs were then printed
on
4"x6" photo paper and 8.5"x 11" plain paper (see Figure 6A). Photographs were
shown to the patient and the desired clinical augmentation lines were sketched
on the
plain paper in accordance with the patient's wishes. Injection sites were
marked on
the plain paper with an "X" along the brachioradialis and wrist flexor
compartments
of both arms and subsequently marked on the corresponding sites on the patient
with a
black surgical marker. Four injection sites were marked per brachioradialis
and three
sites were marked per wrist flexor compartment.
[00143] Thirty minutes prior to the procedure, the patient was
given medication
in the form of oral oxycodone 10mg and dimenhydrinate 50mg in order to
palliate any
secondary injection pain.
[00144] 5cc (for brachioradialis) and 3cc (for wrist flexor
compai talent) of
cross-linked sodium hyaluronate (Modelis Shape) was prepared for intra-
muscular
injection as outlined in Example 1.
[00145] The area for treatment was cleaned thoroughly using
Chlorhexidine
2% with 4% isopropyl alcohol. Intramuscular injection was achieved with a
perpendicular approach to the skin at the pre-determined "X" injection sites.
Approximately 5.625 cc of the HA composition was distributed in total by
injection
between each of the pre-determined brachioradialis injection sites, and
3.375cc of the
HA composition was distributed in total by injection between each of the
forearm
wrist flexor compartment injection sites; aliquot volumes at each location
within the
muscles were based on the desired cosmetic outcome. Negative pressure was
applied
CA 3059521 2019-10-21
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prior to any injection to assure that the vasculature was not injected. Manual
pressure
was repetitively applied to injection sites to ensure even distribution of the
injectable
composition in the local surrounding tissues. Clinical response was observed
after
each injection. Great care was taken to observe the area for signs of ischemic
tissue
that might herald the development of compartment syndrome. Manual pressure was
applied to any bleeding from an injection site and hemostasis was achieved as
a
contingency for the advancement to the next injection site. The entire process
was
duplicated for the contralateral side.
Results:
[00146] The patient had subsequent follow-ups at 2, 8, 14, 28, and 52
weeks
without any signs of complication. Digital photographs were taken in a manner
identical to that described above at 8 weeks post-injection (see Figure 6B).
Persistent
volume augmentation and favourable cosmetic outcome was observed at 52 weeks
post-injection.
Example 7. Deltoid Augmentation:
[00147] A healthy 36 year old male weighing approximately
94kg, with a
height of approximately 180cm was selected to undergo deltoid augmentation.
The
patient had no pre-existing medical conditions and consented to the procedure.
The
patient had been previously injected with lcc doses of byaluronic acid at
remote
locations and showed no clinical evidence of unfavourable reactions at one
year post
treatment.
[00148] The patient was undressed from the waist up. Digital
photographs were
taken against a white backdrop at three level angles for each shoulder:
anterior
neutral, posterior neutral, and lateral flexion. Photographs were then printed
on 4"x6"
photo paper and 8.5"x 11" plain paper. Photographs were shown to the patient
and the
desired clinical augmentation lines were sketched on the plain paper in
accordance
with the patient's wishes. Injection sites were marked on the plain paper with
an
along the anterior, middle, and posterior heads of the deltoids of both arms
and
subsequently marked on the corresponding sites on the patient with a black
surgical
marker. Three to five injection sites were marked per head depending on the
corresponding head length and desired muscular enhancement.
CA 3059521 2019-10-21
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[00149] Thirty minutes prior to the procedure, the patient was
given medication
in the form of oral oxycodone 10mg and dimenhydrinate 50mg in order to
palliate any
secondary injection pain.
[00150] lOcc of cross-linked sodium hyaluronate (Modelis
Shape) was
prepared for intra-muscular injection as outlined in Example 1.
[00151] The area for treatment was cleaned thoroughly using
Chlorhexidine
2% with 4% isopropyl alcohol. Intramuscular injection was achieved with a
perpendicular approach to the skin at the pre-determined "X" injection sites.
11.125cc
of the HA composition was injected in total by distributing between each of
the pre-
determined deltoid injection sites. The needle was advanced through the
subcutaneous
tissue and pierced through the proximal muscular sheath. Injections were
subsequently deposited at locations within the deltoid muscle ranging from
about
0.1cm to about 3cm from the proximal aspect of the muscular sheath. Negative
pressure was applied prior to any injection to assure that the vasculature was
not
injected. Manual pressure was repetitively applied to injection sites to
ensure even
distribution of the injectable composition in the local surrounding tissues.
Clinical
response was observed after each injection. Manual pressure was applied to any
bleeding from an injection site and hemostasis was achieved as a contingency
for the
advancement to the next injection site. The entire process was duplicated for
the
contralateral side.
Results:
[00152] The patient had subsequent follow-ups at 2, 8, 14, 28,
and 52 weeks
without any signs of complication. Persistent volume augmentation and
favourable
cosmetic outcome was observed at 52 weeks post-injection.
Example 8. Pectoralis Major Augmentation
[00153] A healthy 36 year old male weighing approximately
94kg, with a
height of approximately 180cm was selected to undergo pectoralis major
augmentation. The patient had no pre-existing medical conditions and consented
to
the procedure. The patient had been previously injected with lcc doses of
hyaluronic
acid at remote locations and showed no clinical evidence of unfavourable
reactions at
one year post treatment.
CA 3059521 2019-10-21
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[00154] The patient was undressed from the waist up. Digital
photographs were
taken against a white backdrop at five level angles: mid-sternal, mid-
clavicular (left
and right),and mid-axiallary (left-right). Photographs were then printed on
4"x6"
photo paper and 8.5"x 11" plain paper (see Figure 7A). Photographs were shown
to
the patient and the desired clinical augmentation lines were sketched on the
plain
paper in accordance with the patient's wishes. Injection sites were marked on
the
plain paper with an "X" and subsequently marked on the corresponding sites on
the
patient with a black surgical marker. Five injection sites were marked per
pectoralis.
[00155] Thirty minutes prior to the procedure, the patient was
given medication
in the form of oral oxycodone 10mg and dimenhydrinate 50mg in order to
palliate any
secondary injection pain.
[00156] lOcc of cross-linked sodium hyaluronate (Modelis
Shape) was
prepared for intra-muscular injection as outlined in Example 1.
[00157] The treatment area was cleaned thoroughly using
Chlorhexidine 2%
with 4% isopropyl alcohol. Intramusular injection was achieved with a
perpendicular
approach to the skin at the pre-deterniined "X" injection sites. Approximately
11.25cc
of the HA composition was distributed in total by injection between each of
the pre-
determined pectoralis injection sites; aliquot volumes at each location within
the
pectoralis major muscle were based on the desired cosmetic outcome. The needle
was
advanced through the subcutaneous tissue and pierced through the proximal
muscular
sheath. Injections were subsequently deposited at locations within the deltoid
muscle
ranging from about 0.1cm to about 3cm from the proximal aspect of the muscular
sheath. Negative pressure was applied prior to any injection to assure that
the
vasculature was not injected. Manual pressure was repetitively applied to
injection
sites to ensure even distribution of the injectable composition in the local
surrounding
tissues. Clinical response was observed after each injection. Manual pressure
was
applied to any bleeding from an injection site and hemostasis was achieved as
a
contingency for the advancement to the next injection site. The entire process
was
duplicated for the contralateral side.
CA 3059521 2019-10-21
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Results:
[00158] The patient had subsequent follow-ups at 6, 12, 26,
and 50 weeks
without any signs of complication. Digital photographs were taken in a manner
identical to that described above at 6 months post-injection (see Figure 7B).
Persistent
volume augmentation and favourable cosmetic outcome was observed at 50 weeks
post-injection.
Example 9: Increase in Muscular Volume and Muscular Function Following HA
Injection
[00159] Patient 1 underwent intramuscular hyaluronic acid
injection in multiple
muscles at varying dates, including the deltoid, biceps, triceps, medial and
lateral
heads of gastrocnemius, superficial wrist flexor group, brachioradialis,
pectoralis
major, and gluteus maximus. Patient 1 was an active weight trainer prior to
hyaluronic
acid injection and had reached a plateau years ago with no additional size or
strength
gains despite rigorous training.
[00160] Following hyaluronic acid injection, a multisequence post contrast
MRI was obtained through the right deltoid, biceps, and triceps muscles. The
deltoid
muscle had been injected 12 months prior to the MRI, while the biceps muscle
had
been injected 18 months prior to the MRI, and the triceps was injected 21
months
prior to the MRI. Size measurements of the deltoid, biceps and triceps muscles
were
also obtained following hyaluronic acid injection.
Results:
[00161] The MRI imaging shows residual hyaluronic acid in all
three muscles
as a high signal on T2 (due to water content). The hyaluronic acid, shown as
reference
numerals 1 and 5 in Figure 8(A) and reference number 10 in Figure 8(B), is
seen to
insinuate through the muscle fibers in a feathery pattern with a thin rim also
tracking
along the sheath (see Figures 8(A) and 8(B)). Post contrast Ti fat saturated
images
demonstrate a mild similar feathery enhancement, shown as reference numeral 15
in
Figure 9. Most remaining HA was localized at the superficial or outward facing
muscular edge.
[00162] No negative reactions were visualized. There are no large spheres
of
hyaluronic acid with peripheral enhancement that would indicate an abnormal
foreign
CA 3059521 2019-10-21
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body granulomatous reaction. This is in keeping with the patient's favorable
cosmetic
outcome with no nodularity, pain, or abnormal functioning.
[00163] The amount of residual hyaluronic acid was greatest in
the deltoid,
followed by the biceps, with a trace of residual product in the triceps; i.e.,
greater
amounts of HA were observed in the more recently injected muscles. Thus, these
results correlate with the injection dates, and while not wishing to be bound
by theory,
suggest a progressive gradual natural enzymatic/free radical degradation of
the
product by hyaluronidase.
[00164] As shown in Table 1, the patient had significant gains
in muscle size
following injection, demonstrating an increase in muscular volume. This gain
in size
was maintained over time (21 months in the triceps muscle; last test date).
Table 1. Increase in Muscular Volume Following HA Injection
Muscle Time of Measurement Measurement
(inches)
Arm ¨ biceps & triceps Pre-injection* 15
6 Weeks Post-biceps injection** 18
18 Weeks Post-triceps injection** _
12 Months Post-biceps injection** 18
Months Post-triceps injection**
18 Months Post-biceps injection** 18
21 Months Post-triceps injection**
Months Post-biceps injection** 18
28 Months Post-triceps injection**
Chest Pre-injection 41
6 Weeks Post-injection 45
12 Months Post-injection 47
19 Months Post-injection 47
Calves Pre-injection 14
6 Weeks Post-injection 15
12 Months Post-injection 15
19 Months Post-injection 15
CA 3059521 2019-10-21
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*"Pre-injection" refers to the time prior to any injection of the composition
comprising HA into the biceps or triceps muscles.
**There is a constant 12 week difference between the triceps and biceps post-
injection time frames as the triceps were injected with the composition
comprising
HA 12 weeks (3 months) prior to the biceps injection. Therefore, "Post
injection"
refers to a time after both biceps and triceps were injected, and each post
injection
time point is relative to the injection time of the respective muscle
injected.
[00165] After being at a plateau in strength for over a
decade, patient 1 also
experienced significant strength gains following injection (see Table 2),
illustrating an
increase in muscle function with HA injection.
Table 2. Increase in Muscular Function Following HA Injection
Muscle Time of Measurement Muscle Function
x10 reps x4 reps
Biceps Pre-injection 70 lbs dumbbell 100 lbs dumbbell
curls curls
12 Months Post-injection 100 lbs dumbbell 125 lbs dumbbell
curls curls
18 Months Post-injection 115 lbs dumbbell 150 lbs dumbbell
curls curls
Triceps Pre-injection 100 lbs triceps 130 lbs triceps
pressdown pressdown
12 Months Post-injection 120 lbs triceps 150 lbs triceps
pressdown pressdown
24 Months Post-injection 140 lbs triceps 180 lbs triceps
pressdown pressdown
Chest Pre-injection 185 lbs bench press 225 lbs bench
press
12 Months Post-injection 245 lbs bench press 305 lbs bench press
Calves Pre-injection 120 lbs standing 160 lbs
standing
calf raises calf raises
12 Months Post-injection 150 lbs standing 190 lbs standing
calf raises calf raises
Glutes Pre-injection 145 lbs squats 185 lbs squat
12 Months Post-injection 225 lbs squats 295 lbs squat
CA 3059521 2019-10-21
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Shoulders Pre-injection 90 lbs military 130 lbs
military
press press
12 Months Post-injection 135 lbs military 185 lbs military
press press
Example 10: Gluteus Maximus Augmentation
[00166] A healthy 38 year old male weighing approximately
95kg, with a
height of approximately 180cm was selected to undergo gluteus maximus
augmentation. The patient had no pre-existing medical conditions and consented
to
the procedure. The patient had been previously injected with lcc doses of
hyaluronic
acid at remote locations and showed no clinical evidence of unfavourable
reactions at
one year post treatment:
[00167] The patient was undressed from the waist down to his
underwear and
had been instructed to wear an undergarment to provide for a completely
exposed
gluteal surface.
[00168] Digital photographs were taken against a white
backdrop at five level
angles: posterior median, mid-scapular (right and left), and mid-axillary
(right and
left). Photographs were then printed on 4"x6" photo paper and 8.5"x 11" plain
paper
(see Figure 10A). Photographs were shown to the patient and the desired
clinical
augmentation lines were sketched on the plain paper in accordance with the
patient's
wishes. Injection sites were marked on the plain paper with an "X" and
subsequently
marked on the corresponding sites on the patient with a black surgical marker.
[00169] . Thirty minutes prior to the procedure, the patient was
given medication
in the form of oral hydromorphone 6mg and dimenhydrinate 50mg in order to
palliate
any secondary injection pain.
[00170] 60cc of cross-linked sodium hyaluronate (Modelis
Shape) was
prepared for intra-muscular injection, with 2cc in 30 3cc syringes. A 25G 1.5"
large
bore needle was attached to each syringe and set aside for injection. Given
the larger
injection volume associated with this procedure, xylocaine was not included in
the
injection mixture as there was concern that xylocaine toxicity may become an
issue.
CA 3059521 2019-10-21
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[00171] The area to be treated was cleaned thoroughly with
sterile gauze
soaked in Chlorhexidine 2% with 4% isopropyl alcohol. Intramuscular injection
was
achieved with a perpendicular approach to the skin at the pre-determined "X"
injection sites. 2 cc was injected at each of 30 injection sites. The needle
was
advanced through the subcutaneous tissue and pierced through the proximal
muscular
sheath. Injections were subsequently deposited evenly along the injection
tract at three
locations within the gluteus maximus muscle: about 3.0 cm, about 2.0 cm, and
about
1.0cm from the proximal aspect of the muscular sheath. Negative pressure was
applied prior to any injection to assure that the vasculature was not
injected. Manual
pressure was repetitively applied to injection sites to ensure even
distribution of the
injectable composition in the local surrounding tissues. Clinical response was
observed after each injection. Manual pressure was applied to any bleeding
from an
injection site and hemostasis was achieved as a contingency for the
advancement to
the next injection site. The entire process was duplicated for the
contralateral side.
[00172] The patient had baseline creatine kinase and C-reactive protein
measurements done prior to and subsequent to the procedure, which are
laboratory
makers indicative of muscular damage and inflammation, respectively. The
patient
was instructed to maintain excellent hydration for one week following the
procedure
to ensure adequate glomerular filtration rate.
Results:
[00173] The patient had a subsequent follow-up at 1 week
without any signs of
complication. Digital photographs were taken in a manner identical to that
described
above at 1 week post-injection (see Figure 10B). Persistent volume
augmentation and
favourable cosmetic outcome were observed.
[00174] All citations are hereby incorporated by reference, as if each
individual
publication was specifically and individually indicated to be incorporated by
reference
herein and as though it were fully set forth herein. Citation of references
herein is not
to be construed nor considered as an admission that such references are prior
art to the
present invention.
[00175] The present invention has been described with regard to one or more
embodiments. However, it will be apparent to persons skilled in the art that a
number
=
CA 3059521 2019-10-21
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of variations and modifications can be made without departing from the scope
of the
invention as defined in the claims. Examples of such modifications include the
substitution of known equivalents for any aspect of the invention in order to
achieve
the same result in substantially the same way.
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